Shavings-machine.



H. C. GLOYD.

SHAVINGS MACHINE.

APPLICATION FILED JULY 17, 1913.

1,0 51 Patented Feb.10, 1914.

W --z 1 4 T71 I J4 J? J g v 13 E? Witnesses I nven or b y I Attorneys tlTED STATES PATENT OFFIGE.

HENRY C. CLOYI), OF UNION CITY, INDIANA.

SI-IAVINGS-MACI-IINE.

To all whom it may concern:

Be it known that I, HENRY C. CLoYn, a citizen of the United States, residing at Union City, in the county of Randolph and State of Indiana, have invented a new and useful Shavings-Machine, of which the following is a specification.

The device forming the subject matter of this application is a cutter head adapted to be employed for the making of excelsior.

One object of the present invention is to provide a cutter head of the sort above i11- dicated which will increase the output, by providing a pair of knives, located one behind the other.

Another object of the invention is to provide a device of this type which will clear itself readily of the excelsior shavings.

Another object of the invention is to provide novel means for holding the knives within the head.

It is within the scope of the invention to provide novel means for adjusting the knives to regulate the cut thereof.

The invention aims to improve generally and to enhance the utility of devices of that type to which the present invention appertains.

With the above and other objects in view which will appear as the description proceeds, the invention resides in the combination and arrangement of parts and in the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the invention herein disclosed can be made within the scope of what is claimed without departing from the spirit of the invention.

In the accompanying drawing :-Figure 1 shows one form of the invention in top plan; Fig. 2 is a transverse section of the structure shown in Fig. 1; Fig. 3 is a section on the line 3-3 of Fig. 2, parts being omitted; Fig. t is a perspective of the spacer; Fig. 5 is a bottom plan of the body portion of the cutter head; Fig. 6 is a top plan showing a modified form of the invention; Fig. 7 is a bottom plan of the structure shown in Fig. 6; Fig. 8 is a diagrammatic view, alluded to in connection Specification of Letters Patent.

Application filed July 17, 1913.

Patented Feb. 10, 1914.

Serial No. 779,590.

with that form of the invention which is depicted in Figs. 6 and 7 and Fig. 9 is a perspective of the base plate.

In carrying out the invention there is provided a head which is denoted generally by the numeral 1, the head comprising a body portion which is shown in detail in Fig. 5. The body portion of the head 1 comprises a pair of laterally extended lower flanges 2, provided with upstanding side walls 3. The upper, forward edges of the side walls 8 are equipped with inwardly projecting, downwardly extended flanges 4 and the rear edges of the side walls 3 are equipped with inwardly projecting, downwardly extended flanges 5, the flanges 4 and 5 being located approximately at right angles to each other. At the front of the head 1, the side walls 3 are connected by a cross bar 6 provided with a longitudinal slot 7 across which extends a rib 8. A plurality of spurs 9 are located in the slot 7 and are held in abutment with each other and in abutment with the rib 8 by means of set screws 10 which are threaded into the side walls 3. In the lower edges of the side walls 3 there are channels 11, and recesses 12 are formed in the lower faces of the lateral flanges 2.

The invention further includes a spacer denoted by the numeral 14: and shown in detail in Fig. 4. The spacer 14 includes a beveled bar 15 provided at its ends with arms 16, there being ribs 17 projecting from the arms 16. The ribs 17 are slidably received in the channels 11. A base plate 18 is applied to the lower face of the body portion of the head, the base plate 18 including a cross bar 19 and arms 20 which lie in the recesses 12. The base plate 18 is held to the body portion of the head 1 by means of securing elements 21 which may be screws, the same passing through the flanges 2 and entering the arms 20 of the base plate 18. The cross bar 19 of the base plate 18 supports an integrally formed, upstanding rib 22, in the present instance shown as of triangular cross section, the rib 22 constituting an abutment for one of the knives, as will be set forth hereinafter. A forward knife 23 is provided, the knife 23 being in abutment with the forward face of the beveled bar 15 of the spacer 14. Set screws 24 or like clamping means, are inserted into the flanges 5 of the cutter head and bear against the forward face of the knife 23. Other screws 25 are threaded into the flanges 4 and bear upon the upper edge of the knife 28. The screws 25 may be provided with lock nuts 26 if desired. .A rear knife 27 is provided, the forward face of the knife 27 being engaged by the arms 16 of the spacer 15, as will be understood best when Fig. 2 is compared with Fig. 1. The rear face of the rear knife 27 abuts against the rib 22 which constitutes a part of the base plate 18. Screws 28 are thread ed into the flanges 5 of the cutter head and bear upon the upper edge of the rear knife 27. The screws 28 may be equipped with lock nuts 29.

In practical operation, the screws 28 are adjusted so that the rear knife 27 has a slightly deeper out than the forward knife 23. The spurs 9 groove the material and form a mass of excelsior shavings. By the operation of the spurs 9, a plurality of ribs are formed in the block from which the eX- celsior is cut. The upper portions of these ribs are removed by a forward knife 28, the eXcelsior shavings passing upwardly through the opening existing at the rear of the cross bar 6. The lower portions of these ribs which are fashioned in the block are then cut ofl by the rear knife 27, the excelsior shavings passing upwardly between the knives.

Owing to the fact that the spacer 14 is provided with the rearwardly extended arms 16, an opening exists between the knives 27 and 23, through which excelsior shavings produced by the rearmost knife may pass. It is to be observed that the several set screws 24, 25 and 28 are located at the ends of the knives, and consequently, the space which is traversed by the excelsior shavings is not obstructed.

The screws 24 bear against the forward knife 23 and thrust the same against the slidable spacer 14, the arms 16 of the spacer bearing against the rearmost knife 27 and thrusting the same against the rib 22 which constitutes an abutment. In this manner, the several knives may be held securely in the cutter head. Obviously, the depth of cut of the knives may be regulated by adjusting the screws 25 and 28.

In Figs. 6 and 7, a modified form of the invention is shown. For the most part, that form of the invention which appears in Figs. 6 and 7 is of the same construction as that form shown in Figs. 1, 2, 3 and 4. The description, therefore, may be shortened accordingly, material differences being dwelt upon as they appear.

Referring to Figs. 6 and 7, the cutter head is denoted by the numeral 1 the bottom flanges being shown at 2 the side walls being indicated at 3*. The flanges of the side walls 3 are shown at P and 5 The cross bar 6 replaces the cross bar 6 of Figs. 1 and 2. The cross bar 6 and slot 7 and the spurs 9, together with the set screws 10, are omitted. The set screws 28 and 29 exercise the functions of the corresponding parts in Figs. 1, 2 and 3. The set screws 24 correspond to the set screws 24:. The base plate is indicated by the reference character 18 and is of the form hereinbefore described. The spacer 14 remains unchanged, and Fig. 4: at this point may be examined with profit.

The forward knife is denoted by the nu meral 30 and the rear knife is denoted by the numeral 31, these knives bearing the relations to the spacer and to other parts of the structure as hereinbefore set forth. In the present form of the invention, however, knives 30 and 31 are grooved transversely to form teeth 32. Referring to Fig. 7 and more particularly to the diagrammatic view which is numbered 8 it will be observed that the teeth 32 upon one knife alternate with the spaces between the teeth on the other knife. Consequently, when the structure is in operation, the excelsior shavings produced by the forward knife will run clear of the shavings produced by the rear knife. This result is not possible when the teeth of the respective knives are alined parallel to the direction of travel of the cutter head, and as a consequence of the structure shown and described in this application, the output of the machine is doubled, and there is no clogging.

Having thus described the invention, what is claimed is 1.. In an eXcelsior cutter, a head comprising an abutment; a pair of knives in the head and disposed one behind the other, one knife being engaged with the abutment; a movable spacer located between the knives; and clamping means bearing upon the other knife to move both lmives and the spacer toward the abutment.

2. In an excelsior cutter, a head comprising an abutment; a pair of knives in the head and disposed one behind the other, one knife being engaged with the abutment; a movable spacer located between the knives; clamping means bearing upon the other knife to move both knives and the spacer toward the abutment; and means carried by the head for moving the knives to regulate the cut thereof.

3. In an excelsior cutter, a head comprising an abutment; a pair of knives in the head and disposed one behind the other, one knife being engaged with the abutment; a

spacer including a, transverse bar abutting as my own, I have hereto aflixed my signaagalnst the other knlfe and arms termlnally ture 1n the presence of two wltnesses.

abnttin a ainst the first s eeified knife to define si n pening between the knives; and HENRY CLOYD' clamping means carried by the head and en- WVitnesses: gaging said other knife. NELLE WALL,

In testimony that I claim the foregoing THEODORE SHOOKNEY.

Copies of this patent may be obtained for nve cents each, by addressing the Commissioner of Iatentl. Washington, D. 0. 

